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| 1 | Novel Surface Design of Deployable Reflector Antenna Based on Polar Scissor Structures显示文摘Space-deployable mechanisms can be used as supporting structures for large-diameter antennas in space engineering.This study proposes a novel method for constructing the surface design of space reflector antennas based on polar scissor units.The concurrency and deployability equations of the space scissor unit with definite surface constraints are derived using the rod and vector methods.Constraint equations of the spatial transformation for space n-edge polar scissor units are summarized.A new closed-loop deployable structure,called the polar scissor deployable antenna(PSDA),is designed by combining planar polar scissor units with spatial polar scissor units.The overconstrained problem is solved by releasing the curve constraint that locates at the end-point of the planar scissor mechanism.Kinematics simulation and error analysis are performed.The results show that the PSDA can effectively fit the paraboloid of revolution.Finally,deployment experiments verify the validity and feasibility of the proposed design method,which provides a new idea for the construction of large space-reflector antennas. | Pengyuan Zhao Jinguo Liu Chenchen Wu Yangmin Li Keli Chen | 2020 | Chinese Journal of Mechanical Engineering2020，33，5： | 7 |
| 2 | Distributed learning particle swarm optimizer for global optimization of multimodal problems显示文摘 | Geng ZHANG Yangmin LI Yuhui SHI | 2018 | Frontiers of Computer Science2018，12，1： | 5 |
| 3 | Tuning F-doped degree of rGO:Restraining corrosion-promotion activity of EP/rGO nanocomposite coating显示文摘Given that graphene features high electrical conductivity,it is a kind of material with corrosion-promotion activity.This study aimed to inhibit the corrosion-promotion activity of graphene in coatings.Here,we report an exciting application of epoxy matrix(EP)/F-doped reduced graphene oxide(rGO)coatings for the long-term corrosion protection of steel.The synthesized F-doped rGO(FG)did not reduce the utilization of rGO by a wide margin and possessed distinctive electrically insulating nature.The electrical conductivity of rGO was approximately 1500 S/m,whereas those of FG-1,FG-2 and FG-3 were 1.17,5.217×10^−2 and 3.643×10^-11 S/m,respectively.FG and rGO were then dispersed into epoxy coatings.The chemical structures of rGO and FG were investigated by transmission electron microscopy(TEM),scanning probe microscopy(SPM),X-ray photoelectron spectroscopy(XPS),Fourier-transform infrared spectroscopy(FTIR),and X-ray diffraction(XRD).EP/FG coatings exhibited outstanding corrosion protection in comparison with blank EP and EP/rGO coatings mainly because the corrosion-promotion effect of rGO was eliminated.The anticorrosion ability of EP/FG coatingswasimproved with increased F-doped degree of FG.In addition,electrochemical impendance spectroscopy(EIS)results indicated that the Rc values of EP/FG-2 and EP/FG-3 were four orders of magnitude higher than those of EP/rGO in diluent NaCl solution(3.5 wt.%)after immersion for 90 days. | Lu Shen Yong Li Wenjie Zhao Kui Wang Xiaojing Ci Yangmin Wu Gang Liu Chao Liu Zhiwen Fang | 2020 | Journal of Materials Science & Technology2020，44，9： | 5 |
| 4 | Design and application of solar sailing: A review on key technologies显示文摘Solar sail technology has been proposed and developed for space explorations with advantages of low launch cost,no-propellant consumption,and continuous thrust,which has great potentials in earth polar detection,interstellar explorations and etc.The development of solar sail has made significant progress in structural design,manufacturing,materials,orbit transfer,and stability control in the past few decades,which makes meaningful contributions to astronomy,physics,and aerospace science.Technological breakthroughs of Solar Radiation Pressure(SRP)propulsion and interstellar transfer have been achieved in current solar sail missions.However,there are still many challenges and problems need to be solved.This paper attempts to summarize the research schemes and potential applications of solar sailing in space missions from the viewpoint of key technologies,so as to provide an overall perspective for researchers in this field.Analyses of the key technologies of solar sailing system design are provided.Finally,challenges and prospective development of solar sailing are discussed. | Pengyuan ZHAO Chenchen WU Yangmin LI | 2023 | Chinese Journal of Aeronautics2023，36，5： | 3 |
| 5 | Design and analysis of a totally decoupled flexure-based XY parallel micromanipulator显示文摘 | LI Yangmin XU Qingsong | 2009 | IEEE Transactions on Robotics2009，25，3： | 1 |
| 6 | Stiffness analysis for a 3-PUU parallel kinematic machine显示文摘 | Li Yangmin Xu Qingsong | 2008 | Mechanism and Machine Theo- ry2008，43，2： | 1 |
| 7 | Kinematic Analysis of a 3-PRS Parallel Manipulator显示文摘 | LI Yangmin XU Qingsong | 2007 | Robotics and Computer-lntegrated Manufacturing2007，23，： | 1 |
| 8 | Design and analysis of a dual-mode driven parallel XY micromanipulator for micro/nanomanipulations显示文摘 | Tang Hui Li Yangmin Huang Jiming | 2012 | Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical En-gineering Science2012，226，12： | 1 |
| 9 | A modified PSO structure resulting in high exploration ability with convergence guaranteed显示文摘 | CHEN Xin LI Yangmin | | 0，，05： | 1 |
| 10 | Design and robust repetitive conttrol of a new parallel-kinematic XY piezostage for micro/nanomanipulation显示文摘 | Li Yangmin Xu Qingsong | 2012 | IEEE/ASME Transactions on Mechatronics2012，17，6： | 1 |
| 11 | Kinematic analysis of a 3-PRS parallel manipulator 显示文摘 | Li Yangmin Xu Qingsong | 2007 | Robotics and Computer Integrated Manufacturing2007，23，4： | 1 |
| 12 | Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier显示文摘 | Xu Qingsong Li Yangmin | 2011 | Mechanism and Machine Theory2011，46，2： | 1 |
| 13 | Adaptive sliding mode control with perturbation estimation and PID sliding surface for motion tracking of a piezo-driven micromnipulaor 显示文摘 | Li Yangmin Xu Qingsong | 2010 | IEEE Transaction on Control Systems Technology2010，18，4： | 1 |
| 14 | The identification of joint parameters for modular robots using fuzzy theory and a genetic algorithm 显示文摘 | Li Yangmin Liu Xiaoping Peng Zhaoyang | 2002 | Robotical2002，20，5： | 1 |
| 15 | Stiffness analysis for a 3 - PUU parallel kinematic machine显示文摘 | Li Yangmin Xu Qingsong | 2009 | Mechanism and Machine Theory2009，，43： | 1 |
| 16 | Kinematic Analysis and Optimization of a New Complaint Parallel Micromanipulator显示文摘 | Qingsong Xu Yangmin Li | 2006 | International Journal of Advanc- ed Robotic Systems2006，3，4： | 1 |
| 17 | A new approach to the architecture optimization of a general 3-PUU translational parallel manipulator 显示文摘 | Li Yangmin Xu Qingsong | 2006 | Journal of Intelligent and Robotie Systems2006，46，1： | 1 |
| 18 | Design and analysis of a novel 6-DOF redundant actuated parallel robot with compliant hinges for high precision positioning显示文摘 | YunYuan Li Yangmin | | 0，，04： | 1 |
| 19 | Stiffness analysis for a 3-PUU parallel kinematic machine显示文摘 | LI Yangmin XU Qingsong | 2008 | Mechanism and Machine Theory2008，43，2： | 1 |
| 20 | Stiffness analysis for a 3- PUU parallel kinematic machine显示文摘 | LI Yangmin XU Qingsong | 2008 | Mechanism and Machine Theory2008，43，2： | 1 |
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